Wolves found to be more cooperative with their own kind than dogs with theirs
(PHYSorg.com Biology)

(Phys.org)-A team of researchers from the Wolf Science Center and the Comparative Cognition, Messerli Research Institute, both part of the Medical University of Vienna, has found that packs of wolves behave more cooperatively among themselves than do groups of dogs. In their paper published in Proceedings of the National Academy of Sciences, the group describes how they tested both groups of animals at their research institute and what they found by doing so.